121554320 has 40 divisors (see below), whose sum is σ = 283106880. Its totient is φ = 48536960.

The previous prime is 121554313. The next prime is 121554347. The reversal of 121554320 is 23455121.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66215 + ... + 68025.

It is an arithmetic number, because the mean of its divisors is an integer number (7077672).

Almost surely, 2^121554320 is an apocalyptic number.

121554320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121554320 is an abundant number, since it is smaller than the sum of its proper divisors (161552560).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121554320 is a wasteful number, since it uses less digits than its factorization.

121554320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2663 (or 2657 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 121554320 is about 11025.1675724227. The cubic root of 121554320 is about 495.3628873199.

The spelling of 121554320 in words is "one hundred twenty-one million, five hundred fifty-four thousand, three hundred twenty".